Wood-turning machine



K. M. 'CLIF'SHAM 'wooD TURNING MACHINE Dec. 21 1926.

Filed May 4. 1925 2 Sheets-Sheet 2 Patented Dec. 21, 1926.

UNITED STATES 1,611,418 PATENT OFFICE.

KENNETH M. CLIPSHAM, OLE TORONTO, ONTARIO, CANADA, ASSIGNOR F THIRTY- TI-IREE PER CENT TO THOMAS CAMERON BATE, THIRTY-THREE PER CENT TO ED- WARD MGMAHON, TWENTY-NINE PER CENT TO PHILLIP D. LYONS, AND FIVE PER GENT TO ALEXANDER PIERPONT DEROCHE, 0F OT'IAVV A, CANADA.

WOOD-TURNING MACHINE.

Application filed May 1925. SerialNo. 27,952.

This invention relates to machines for turning handles such as used for brooms. mops, hoes and the like, and more particularly to the mechanism for pulling the hanb dle through the turning mechanism, and my object is to provide apparatus of this nature which will provide a positive feed for handles having irregular contours.

I attain my object by means of the constructions hereinafter described and illustrated in the accompanying drawings, in which v Fig. 1 is a side elevation of part of a machine showing the pulling and feeding mechan sms in section;

Fig. 2 an end elevation of the left hand end of the pulling mechanism shown in Fig. 1; Fig. 8 a cross section on the line 3 3 in Fig. 1;

Fig. 1- a longitudinal section of a feed roller and spindle with other parts shown in elevation, the direction of view being along the line R Q in Fig. 2 at right angles to the line Q, P, the line Q R indicating the longia tudinal center line of the spindle;

Fig. 5 a detail in side elevation of part of the pulling mechanism;

Fig. 6 an end elevation of the spring guide;

and

Fig. -8 a cross section on the line 88 in Fig. 6.

In the drawings like reference numerals indicate corresponding parts in the different figures.

1' is the base of the machine suitably.

shaped to support the difierent, parts. The

ner, past a roughing cutter 2 which carries a threading cutter 3 which cuts a slight thread below the roughly turned periphery These openings are tapered at 8? to faci1istick 1 is rotatably fed, in any suitable man- '9towards one another.- Adjusting screws are provided for the springs whereby the compression of the latter may be adjusted to firmly hold the stick without causing any jamming while the finishing cut is being made thereon.

The finishing cutter 10 is located between the thimble 5 and guide 6. Thecutters 2, 3 and 10 may be driven in any suitable manner and as they form no part of this invention they are only partly shown and briefly described.

As the turned end of the stick passes through the spring guide it is engaged by the pulling mechanism I shall now describe. On the base 1 is secured, by means of bolts or screws 11, a frame 12 on which are mounted three feed rollers ab and a secured to the ends of spindles'a Z2 0 These spindles are journalled in supporting members a 6 and 0 having spaced lugs a 6 and 0 formed on or secured to their ends remote from the feed rollers. These lugs. are jourend of the latter adjacent the feed rollers is bored out to receive an annular disk 13 havv ing guides 07', Z) and 0 adapted to receive Fig. 7 a horlzontal section ofthe same,"

slides a b and 0 formed on or secured to the supporting members. In each guide is carried a spring 14 adaptedto engage the slide therein for yieldingly maintaining each feed roller in engagement with the stick.

The axis of each spindle is set at an angle to a plane in which lies the axis of the stick 1 and the line of contact of the roller with the stick whereby the rollers are set to feed the stick, when suitably driven, at substantially the same speed as the threaded guide 4.

The aXes of the spindles a 6 and 0 are also spaced from the axis of the stick and arearranged in equi-angular relationship to one another. From the constructions described it .follows that the bearings a, b,

and c are tilted in a direction longitudinal of the axis of the stick to enable the adjacent ends of the bearing pins to'overlap.

The feed rollers are driven by a skew gear 15 secured to a-hollow shaft 16 journalled at its forward endin ball bearings carried by the frame 12. Q The rear end:- Of -this shaft ed telle th a iii nim v1 is journa lle'd, by means of ball bearings, carried in an end member 12 of the frame. sleeve 17 passed through the disk 13, frame 12, shaft 16 and member 12 forms a continuous and unbroken channel for the stick to pass through these parts. At the ends of the spindles remote from the feed rollers are secured spur gears o 7f and 0 This arrangement of using a skew gear meshed with spur gears enables each spindle to healso set at an angle to the axis of the sleeve 17 in a plane at right angles to the hereinbet'ore mentioned plane.

Referring particularly to Figs. 1 and 3, it will he noted that the bearings (r312 and c are equ-i-ang nlarly arranged so that their axes intersect thepitch circle of thejskew gear 15 at the median plane thereof, which Iar raligement permits a radial movement of the p I g1 ent of the spur ears relative to thesjkew gear. I

.et e lc is i c ed t nd 3 which show the relative positions of the feed rollers atone end Q of the spindles and the gears at the other end It thereof. The line Q.VR thus indicates the center line of the spindle.

The hollow shaft 16 driven by means or a train of gearing 18 adaptedto be driven by a pulley 19. The 1ran 1e12 and member 12 are connected by a sheet metal hood 12 which forms a cover for the hinge hearings and gears.

The mode 0t operation, assuming the stick is being rotatahly :ted past the roughing and threading cutters 2 and 8, is as follows. Vhen the tread. in the stick engages the threaded guide 4-, the latter, assuming the stick is be ng rotated, feeds it towards the finishing cutter 1 0 and the feed rollers a, b and 0. These rollers have their peripheries tormd as knurled tires with their corners ch-anitered oil to facilitate the entrance of off the stick between them and are adapted to pull or feed the rear end of the stick past he finishing cutter after it has been disengaged by the threadedgu'ide 1. In a wood turning machine, pulling mechanism "for a turned stick comprising r a p ur ty of r g d spind s a ng d longitudinally of at an angle to the arts of the Stick; a feed roller carried atone of each spindle; driving means including gear secured to the other end of each spindle; hearings for the spindles; and a hinge connection betwe the frameand all a he onn t be ng a j e and ada ted "to 1 ernrit the feed rtllei to see-mania f the x h tick:

9 t 'i i a i e, a r l mai ti k ines-11g 1a i, a of i i t d ia is d at an ang e h fixi Of t e t a f ed m te train the teed roller and mesa-lea with roller carried at one end of each spindle; an annular driving gear carried concentrically ot the stick; a driven gear secured to the end of each spindle remote from the teed roller and meshed with the driving gear; and a hinge connection between the frame and each spindle located adjacent the driving gear for permitting the feed roller to move radially of the axis of the stick, the axis of the hinge connection substantially intersecting the pitch circle of the driving gear.

3. A wood turning machine constructed as set forth in claim '2 in which the driving gear is formed witl'i skew teeth and the driven gears have spur teeth adapted to mesh with the skew gear.

1. In a wood turning machine, pulling mechanism for a turned stick comprising a frame; a plurality of spindles arranged lengthn' ise "of and space'dtrom the axis 01" thestick; a teed roller carried at one end of each spindle; an annular driving gear carried concentrically of the stick; a driven gear secured to the end of each spindle re mote from the feed roller and meshed with the driving gear; and a hinge connection between the frame and each spindle located adjacent the driving gear for permitting the feed rollers to move radially of the axis ot the stick, the axis of each hinge connection substantially intersecting the pitch circle of the driving gear, the axis of each spindle being set at an angle to a plane in which lies the axis oft the stick and the point of contact of the roller with the stick whereby the ends of adjacent hinged connections will be positioned in staggered relationship with one another.

5.1n a wood turning machine, pulling mechanism for :1 turned stick comprising a frame; a. plurality of spindles arranged at an angle to the axis of the stick; a teed roller carried at one end of each spindle a'u armirlar driving gear carried concentrically of the stick; a driven. ear secured to the end of each spindle remote from the feed roller and. meshed with the driving gear; and a hinge connection between the :trame a- 1 each spin ...Je,thc hi {red connection being itorm d in parts arranged opposite sides of the LII lltl

driving gear for permitting the feed rol tomove radially of the axis of th stick,

axis of the hinge connection intersecting the pitch circle of ca a 6 In ed turning mechanism for a turned frame; a plum it: 01"- lengthwise of and spaced iirom 1 thest-ick; a teedroller carri d at 'oiie end of each spindle" an annular d r viedconcentric oi the stick; a driven gear secured to his end of each spindie the driving gear; and a hinge connection between the frame and each spindle, the hinged connection being formed in parts arranged at opposite sides of the driving gear for permitting the feed roller to move radially of the axis of the stick, the axis of each hinge connection substantially intersecting the pitch circle of the driving gear, the axis of each spindle being set at an angle to a plane in which lies the axis of the stick and the point of contact of the roller with the stick whereby the parts of adjacent hinged connections will be positioned in staggered relationship with one another.

7. In. a Wood turning machine, pulling mechanism for a turned stick comprising a frame; a sleeve carried by the frame adapted for the passage of the stick; three bearings carried on the frame arranged transversely of and equilaterally about the axis of the sleeve, the bearings being tilted in a direction longitudinally of the sleeve to enable one end of each bearing to overlie the adjacent end of another bearing; supporting members for spindles hinged on said frame by means of said bearings; spindles for carrying rollers journalled in said supporting members at right angles to the axes of the bearings; rollers secured to the free ends of the spindles and means for driving the spindles.

8. In a wood turning machine, pulling mechanism for a turned stick comprising a frame; a. sleeve carried by the frame adapted for the passage of the stick; three bearings carried on the frame arranged transversely of and equilaterally about the axis of the sleeve, the bearings being tilted in a direction longitudinally of the sleeve to enable the adjacent ends of the hearings to overlap; supporting members for spindles hinged on said frame by means of said bearings; spindles for carrying rollers journalled in said supporting members at right angles to the axis of the bearings; rollers secured to the free ends of the spindles; a driving gear concentric of the sleeve; driven gears secured to the ends of the spindles adjacent the bearings and meshed with the driving gear, the axes of the bearings substantially intersecting the pitch circle of the driving gear.

9. In a wood turning machine, pulling mechanismfor a turned stick comprising a frame; a sleeve carried by the frame adapted for the passage of the stick; three bearings carried on the frame arranged transversely of and equilaterally about the axis of the sleeve, each bearing being formed by spaced lugs and pins, the lugs being tilted in a direction longitudinal of the sleeve to enable the adjacent pins to overlap; supporting members for spindles having spaced lugs hinged on the said pins; spindles journalled in said supporting members at right angles to the axis of the bearings; rollers secured to the free ends of the spindles; a driving gear concentric With the sleeve; and driven gears secured to the ends of the spindle remote from the feed rollers and meshed with'the driving gear, the axes of the bearings sub stantially intersecting the pitch circle of the driving gear, the spaced lugs and pins of each bearing being located at opposite sides of the driving gear.

KENNETH M. CLIPSHAM. 

